@trwnh@mastodon.social given that one way a context collection is discovered is via reference via a collection member itself, that's one way to define it.
Admittedly, direct access to a context collection is also a legitimate use case (e.g. a NodeBB topic URL itself is the context collection), so something more explicit might be required.
@projectmoon@forum.agnos.is yes, Lemmy has a local representation of this category, and sends the post here. I see that it's addressed to the category and automatically slot it in